Thanks to the 1987 Montreal Protocol and its amendments ozone depleting chlorine (and bromine) in the stratosphere has declined slowly since the late 1990s. Based on long-term ozone profile observations from satellites and ground-based remote sensing stations, the paper shows that ozone is responding as expected, and has increased by 1 to 2 % per decade since 2000 in the upper stratosphere, around 40 km altitude. At lower altitudes, however, ozone has not changed significantly since 2000.